Device holder



FIG. 1 is a perspective view of a device holder as seen from the front, top and right side;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof; the left side view is a mirror image of the right side;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof. 

The ornamental design for a device holder, substantially as shown and described. 